Needleless injection device comprising means for regulating the gas pressure level in the combustion chamber
US7455655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2004 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Sep 3, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/484
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a needleless injection device (1) comprising a body (2) which supports and/or defines a plurality of elements that form a circuit of elements. The aforementioned circuit comprises, from upstream towards downstream, an initiation device which is associated with a pyrotechnic gas generator, a receptacle (5) housing a liquid active agent that is to be injected, and an active agent injection system. According to the invention, the pyrotechnic gas generator comprises a pyrotechnic charge (62) which is placed in a combustion chamber (4). The inventive device is characterised in that it comprises at least one device for regulating the gas pressure level in the combustion chamber (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.